BIO 200LLB Lecture Notes - Lecture 19: Chestnut Blight, Coevolution, Myxoma Virus

• School: University at Buffalo
• Department: Biological Sciences
• Course: BIO 200LLB
• Professor: Herreid, C F

Document Summary

Many frogs (chordata) sit and wait for prey. Prey becomes extinct and predator becomes extinct. Predator becomes extinct and prey population explode. Predator and prey population co-exit (evolution is possible given time) 10 different secondary food sources = buffer species . But pigs and humans eat almost everything. Predator kept at low populations because of other factors. Evolutionary arms race between predator and prey. Only the best predators survive and only best prey survive. Predator selected dumb, visible, tasty, catchable prey, but only the smartest, fastest, cleverest predators will survive. Batesian mimicry- mimicking dangerous or unpalatable species. Mullerian mimicry- all species are unpalatable or dangerous and have the same colour pattern. Tropical butterflies are unpalatable, this is a form of mutualism. Living together of unlike organisms in a long time relationship. Usually this means one species living physically inside or on another species. Commensal host (0), host commensal (+) Mutalist mutalist (+), and vice versa.